Quarterly report pursuant to Section 13 or 15(d)

Business - Additional Information (Detail)

v3.5.0.2
Business - Additional Information (Detail)
6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Company's ownership percent 93.10% 100.00%
Maryland [Member]    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Company re-incorporated date Mar. 24, 2011  
Delaware [Member]    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Company re-incorporated date May 25, 2004  
California [Member]    
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]    
Company originally incorporated date Jun. 14, 1997